{"id":203314,"date":"2025-03-19T05:10:11","date_gmt":"2025-03-19T05:10:11","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=203314"},"modified":"2025-03-19T05:10:13","modified_gmt":"2025-03-19T05:10:13","slug":"the-name-of-the-ionic-compound-with-the-formula-rb3p-is","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/03\/19\/the-name-of-the-ionic-compound-with-the-formula-rb3p-is\/","title":{"rendered":"The name of the ionic compound with the formula Rb3P is"},"content":{"rendered":"\n

The name of the ionic compound with the formula Rb3P is:
1) Trirubidium phosphide
2) Rubidium phosphide
3) Rubidium (1) phosphide
4) Rubidium (III) phosphide<\/p>\n\n\n\n

The correct answer and explanation is :<\/strong><\/mark><\/p>\n\n\n\n

The correct answer is:
(2) Rubidium phosphide<\/strong><\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

Understanding Ionic Compounds<\/strong><\/h4>\n\n\n\n

Ionic compounds are named by identifying the cation (positively charged ion) first and then the anion (negatively charged ion). The metal typically forms a cation, while the nonmetal forms an anion. In this case, we have Rb (Rubidium)<\/strong> and P (Phosphorus)<\/strong>.<\/p>\n\n\n\n

Step 1: Identify the Ions<\/strong><\/h4>\n\n\n\n
    \n
  • Rubidium (Rb)<\/strong> is an alkali metal (Group 1)<\/strong>, which always forms a +1 charge<\/strong> (Rb\u207a<\/strong>).<\/li>\n\n\n\n
  • Phosphorus (P)<\/strong> typically forms a -3 charge<\/strong> (P\u00b3\u207b<\/strong>) when it becomes an anion (phosphide ion).<\/li>\n<\/ul>\n\n\n\n

    Step 2: Balance the Charges<\/strong><\/h4>\n\n\n\n

    To ensure the compound is electrically neutral, we need three Rb\u207a<\/strong> ions to balance the -3 charge<\/strong> of one P\u00b3\u207b<\/strong> ion. This gives us the formula Rb\u2083P<\/strong>.<\/p>\n\n\n\n

    Step 3: Name the Compound<\/strong><\/h4>\n\n\n\n
      \n
    • The cation (rubidium)<\/strong> is simply named “rubidium” because it has a fixed oxidation state (+1) and does not require a Roman numeral.<\/li>\n\n\n\n
    • The anion (phosphide)<\/strong> follows the rule of changing the element name from “phosphorus” to “phosphide.”<\/li>\n<\/ul>\n\n\n\n

      Thus, the correct name is Rubidium phosphide<\/strong>.<\/p>\n\n\n\n

      Why Are the Other Options Incorrect?<\/strong><\/h3>\n\n\n\n

      1) Trirubidium phosphide<\/strong> \u2192 Incorrect because prefixes (like “tri-“) are not used in ionic compound names.
      2) Rubidium phosphide<\/strong> \u2192 Correct, as explained.
      3) Rubidium (I) phosphide<\/strong> \u2192 Incorrect because rubidium always has a +1 charge, so the Roman numeral is unnecessary.
      4) Rubidium (III) phosphide<\/strong> \u2192 Incorrect because rubidium does not form a +3 charge.<\/p>\n\n\n\n

      Conclusion<\/strong><\/h3>\n\n\n\n

      The correct name for Rb\u2083P<\/strong> is Rubidium phosphide<\/strong>, following standard ionic naming conventions.<\/p>\n","protected":false},"excerpt":{"rendered":"

      The name of the ionic compound with the formula Rb3P is:1) Trirubidium phosphide2) Rubidium phosphide3) Rubidium (1) phosphide4) Rubidium (III) phosphide The correct answer and explanation is : The correct answer is:(2) Rubidium phosphide Explanation: Understanding Ionic Compounds Ionic compounds are named by identifying the cation (positively charged ion) first and then the anion (negatively […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-203314","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/203314","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=203314"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/203314\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=203314"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=203314"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=203314"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}